022
CXUS51 KPHI 011531
CLMABE
CLIMATE REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1131 AM EDT THU OCT 01 2026
...............................
...THE ALLENTOWN PA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1922 TO 2026
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 99 09/02/1980
09/03/1953
09/02/1953
LOW 30 09/28/1947
HIGHEST 88 09/01 89 -1 86 09/18
09/28
LOWEST 45 09/15 40 5 47 09/08
09/09
AVG. MAXIMUM 76.2 77.4 -1.2 79.1
AVG. MINIMUM 58.1 55.2 2.9 56.0
MEAN 67.2 66.3 0.9 67.6
DAYS MAX >= 90 0 2.0 -2.0 0
DAYS MAX <= 32 0 0.0 0.0 0
DAYS MIN <= 32 0 0.0 0.0 0
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 12.99 2011
MINIMUM 0.12 1943
TOTALS 4.44 4.84 -0.40 2.66
DAILY AVG. 0.15 0.16 -0.01 0.09
DAYS >= .01 9 9.6 -0.6 9
DAYS >= .10 8 6.5 1.5 4
DAYS >= .50 3 2.9 0.1 1
DAYS >= 1.00 1 1.5 -0.5 1
GREATEST
24 HR. TOTAL 1.11 09/20 TO 09/20 1.88
SNOWFALL (INCHES)
RECORDS
TOTAL 0.0
SNOW DEPTH 0
TOTALS 0.0 0.0 0.0 0.0
SINCE 7/1 0.0 0.0 0.0 0.0
SNOWDEPTH AVG. 0 0
DAYS >= TRACE 0 0.0 0.0 0
DAYS >= 1.0 0 0.0 0.0 0
GREATEST
SNOW DEPTH 0 0
24 HR TOTAL 0.0 0.0
DEGREE DAYS
HEATING TOTAL 40 70 -30 14
SINCE 7/1 40 70 -30 26
COOLING TOTAL 112 108 4 100
SINCE 1/1 982 968 14 919
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WIND (MPH)
AVERAGE WIND SPEED 6.5
HIGHEST WIND SPEED/DIRECTION 30/020 DATE 09/26
HIGHEST GUST SPEED/DIRECTION 44/250 DATE 09/03
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.47
NUMBER OF DAYS FAIR 13
NUMBER OF DAYS PC 9
NUMBER OF DAYS CLOUDY 8
AVERAGE RH (PERCENT) 73
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 4 MIXED PRECIP 0
HEAVY RAIN 6 RAIN 7
LIGHT RAIN 15 FREEZING RAIN 0
LT FREEZING RAIN 0 HEAVY SNOW 0
SNOW 0 LIGHT SNOW 0
SLEET 0 FOG 12
FOG W/VIS <= 1/4 MILE 0 HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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